/** 尺寸变化监听 resizelistener **/
.wi-resizelistener{ visibility: hidden; }
.wi-resizelistener,
.wi-resizelistener-in1,
.wi-resizelistener-in2{
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
}
.wi-resizelistener-in1,
.wi-resizelistener-in2{ overflow: auto; }
.wi-resizelistener-in2:before{
    content: " ";
    display: block;
    width: 200%;
    height: 200%;
}